Tutuila is the largest of seven islands in American Samoa at 142.3 sq. km.
Volcanic in origin, it reaches a height of 653m at Matafao Peak. Tutuila is
centered at 14.30S, 169.75W, has 101.3 km of coastline and an estimated
36.2 sq. km of reef area. The port of Pago Pago is a collapsed crater and is
one of the largest natural ports in the Pacific. Pago Pago contains a tuna
cannery which is a hub of a large purse-seining tuna fishing fleet. The
cannery outputs large amounts of nutrients as byproduct into the waters of
Pago Pago harbor. The human population of Tutuila in 1990 was 45,043. It is
considered a high island and contributes significant nutrient and sediment
runoff to coastal waters. Tutuila's waters are protected by the 0.7 sq. km
Fagatele Bay National Marine Sanctuary, as well as by the National Park of
American Samoa, which covers the north-central part of the island and ~5 sq.
km of coastline.
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